Merge pull request #14 from nicori-n-team/dev-goto

Dev goto
ランキング編集。
ランキング編集。
クイズスタートの画像変更
Merge branch 'dev-sawabe' of https://github.com/nicori-n-team/nicoriq-ios into dev-sawabe
Merge pull request #15 from nicori-n-team/dev-sawabe

Dev sawabe
Merge branch 'master' of https://github.com/nicori-n-team/nicoriq-ios into dev-takakura
Merge pull request #16 from nicori-n-team/dev-takakura

Dev takakura
Add NQImageView (include UIActivityIndicatorView)